ESCO AIR CONDITIONING CERTIFICATION
PRACTICE TEST 2026 QUESTIONS WITH
VERIFIED ANSWERS GRADED A+
⩥ Heat added to a substance without a rise in temperature. Answer:
Latent heat
⩥ Heat added to the refrigerant in a vapor state after the evaporation
process is called. Answer: Superheat
⩥ Scroll compressor move refrigerant by. Answer: Involute Spirals
⩥ The movement of heat by way of fluid is called. Answer: Convection
⩥ The movement of heat by direct contact is. Answer: Conduction
⩥ The standard unit for measuring the quantity of heat in a substance is.
Answer: BTUs
⩥ Refrigerant gives up heat when. Answer: It condenses
, ⩥ Why must refrigerant in the suction line be slightly warmer than the
saturation temperature?. Answer: Prevent liquid slugging of the
compressor
⩥ The state of the refrigerant in the suction line should be. Answer: Low
pressure / Low temperature vapor
⩥ The state of the refrigerant entering the condenser is. Answer: High
pressure / Highly superheated vapor
⩥ The evaporator. Answer: Transfers heat from the refrigerated space to
the refrigerant
⩥ Which of the following is not a thermodynamic property of
refrigerants. Answer: Flammability
⩥ The sequential order of steps in the vapor compressions process are.
Answer: Compression, Condensation, Expansion, Vaporization
⩥ If a 30 pound cylinder of reclaimed R 410 a refrigerant has been
stored overnight at 70° the pressure in the cylinder should be
approximately. Answer: 201 psig
⩥ Fan airflow pressures are usually measured in. Answer: Inches of
water column
PRACTICE TEST 2026 QUESTIONS WITH
VERIFIED ANSWERS GRADED A+
⩥ Heat added to a substance without a rise in temperature. Answer:
Latent heat
⩥ Heat added to the refrigerant in a vapor state after the evaporation
process is called. Answer: Superheat
⩥ Scroll compressor move refrigerant by. Answer: Involute Spirals
⩥ The movement of heat by way of fluid is called. Answer: Convection
⩥ The movement of heat by direct contact is. Answer: Conduction
⩥ The standard unit for measuring the quantity of heat in a substance is.
Answer: BTUs
⩥ Refrigerant gives up heat when. Answer: It condenses
, ⩥ Why must refrigerant in the suction line be slightly warmer than the
saturation temperature?. Answer: Prevent liquid slugging of the
compressor
⩥ The state of the refrigerant in the suction line should be. Answer: Low
pressure / Low temperature vapor
⩥ The state of the refrigerant entering the condenser is. Answer: High
pressure / Highly superheated vapor
⩥ The evaporator. Answer: Transfers heat from the refrigerated space to
the refrigerant
⩥ Which of the following is not a thermodynamic property of
refrigerants. Answer: Flammability
⩥ The sequential order of steps in the vapor compressions process are.
Answer: Compression, Condensation, Expansion, Vaporization
⩥ If a 30 pound cylinder of reclaimed R 410 a refrigerant has been
stored overnight at 70° the pressure in the cylinder should be
approximately. Answer: 201 psig
⩥ Fan airflow pressures are usually measured in. Answer: Inches of
water column
